Someone help me please!

[George_San_Jose1]

Thanks for posting the update ksteed94 . That one was really a puzzler. I guess anytime a complaint of a vehicle not going beyond 30-40 mph comes up, even it it seems transmission related, a cat test has to be on the agenda.

Just wondering, did anyone do a simple intake manifold vacuum test? That would usually be part of a basic set of simple tests a mechanic would do for drivability problems. Usually that would show signs of a cat problem, at least one severe enough to result in this symptom.

[ksteed94]

@GeorgeSanJose We seen the back pressure reading on a OBD scan tool but we really didn’t know the normal amount so we kept scrolling through. I kind of hate I had to take it to 2 different dealerships. The first one made me change something that wasn’t the issue but needed to be replace (if that makes any sense). The second one was a winner.